229 x 162 mm - ( C5 / A5 Size - 125 Envelopes / Box ). 324 x 229 mm - ( C4 / A4 Size - 125 Envelopes / Box ). 238 x 163 mm - ( C5+ / A5+ Size 125 Envelopes / Box ). 352 x 249 mm - ( C4+ / A4+ Size 125 Envelopes / Box ).
C4 Envelope - UK
A4/C4 Hard Board Back Manilla Envelopes Please Do Not Bend
229 x 162 mm - ( C5 / A5 Size - 125 Envelopes / Box ). 324 x 229 mm - ( C4 / A4 Size - 125 Envelopes / Box ). 238 x 163 mm - ( C5+ / A5+ Size 125
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A3 Envelopes - UK
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C3 / A3 Board Backed Envelopes, C3 Size Hard Backed Envelopes
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